THE YOUNG NATURALIST. 



elongata, Cardtia tenuicosta, Pleurotomaria perspective!,, Solarium grano- 

 sum, Nautilus P) eslong chain psianus, Ammonites varians, A. subplana, A. 

 subtuberculata, A. navicularis, Scaphites cequalis, Belemnilella plena. 



Dorking. 



Trigonia aliformis, Belemnitella quadrata, Ammonites Ausieni, A. per am- 

 pins, A. curvatus, A, splendus, Micraster cor-anguinum, Serpula antiquata, 

 Ptliynclionella Mantellana, Terebratula semiglobosa, Galeriies albogalerus, 

 Serpula plexus, Ptchodus discurrens, P. latissimus, Olodus appendiculatus. 



Guildford. 



Pecten Beaveri, Ammonites Mantelli, Anavicutaris Sussexiensis, Nauti- 

 lus radiatus, N. elegans, N. undulatus, Terebratula globosa, Inoceramus 

 mytiloides, I. pictus. 



Mickleham. 



Marsupites Milleri. 



Godstone. 



Plagiostoma spinosum. 



THE TERTIARY EPOCH. — The Eocene Tertiary strata of INortb 

 Surrey form part of the beds which constitute the southern half of the Lon- 

 don Basin, so called because the beds have a dip towards London, both on 

 the south and north, the first of these are 



THE THANET BEDS.— These are composed fine sand, and it might 

 almost be said are unfossiliferous, although Ostrea have, I believe, been 

 found in the Beddington district. 



THE WOOLWICH AND READING BEDS, — These beds are 

 composed of mottled clays and sands and their chief Organic remains are— 

 Dulwich. 



Cyrena Dulwichieuis, Melania inquinata, Bulimius elipticus, Pitha- 

 rella Rickmanni, Paludina lenta. 



Peekham. 



Ostrea tenera, 0. pulchra, Cyrcena cuneiformis, C. semistriata, Pitha- 

 rella Rickmani, Paludina lenta, Cevithuim funatum, Unio Deshayesii. 



Park Hill. 



Ostrea, Bellovacina, Cardia, Nucula, Melanice, Pholadomyce, Cyrence, 

 Paludince, and remains of Coryphodon. 



OLDHAVEN BEDS. — These are sandy, with flint pebble beds, and 

 are less than 20 feet thick ; they are exposed on Thornton Heath, Shirley, 

 and Addington. 



